国产600MW机组超临界直流锅炉吹管工艺的研究

A Study of Steam Purging Techniques for a Chinese-made 600 MW Supercritical Once-through Boiler

分析比较了目前国内外主要的两种锅炉吹管工艺———降压吹管法和稳压吹管法的优缺点。在我国首台使用锅炉水泵启动系统的600 MW超临界直流锅炉上,通过试验和计算,研究了稳压吹管的可行性,设计了稳压吹管工艺流程,探讨了吹管过程中的注意事项,为其它各型超临界锅炉调试和运行提供了很好的借鉴。

Drawbacks and advantages of two main kinds of steam purging technique currently employed both at home and abroad for boilers,namely,pressure-reduction and stable-pressure methods,are compared and analyzed.On the first Chinese-made 600 MW supercritical once-through boiler with a recycle pump-based start-up system the feasibility of the stable-pressure steam purging technique was investigated through tests and computations with its technological procedures being designed.Moreover,some items to which due attention should be paid are discussed and explored.The present study can provide valuable reference data and information for the commissioning tests and operation of other types of supercritical boilers.